• Jul 8th 2012, 05:47 PM
kingman
I need help in the below problem.
Thanks
• Jul 8th 2012, 10:52 PM
earboth
Quote:

Originally Posted by kingman
I need help in the below problem.
Thanks

1. Let r denote the distance XA and s the distance BY. Use the definition of speed: $speed = \frac{distance}{time}~\implies~ time = \frac{distance}{speed}$

2. You can extract a system of simultaneous equations from the text:

$\frac r4 = \frac{s+120}6~\wedge~\frac{r+120}6=\frac s4$

Solve for r and s.
• Jul 9th 2012, 07:54 AM
kingman